Used Jaguar Belt Tensoner part #7W83 6B209 AA.
Fits Jaguar 2003-2008 S types, 2005-2009 Jaguar super V8, 2003-2009 Vanden Plas, 2004-2009 XJ8 XJR, 2003-2009 XK,XKR, 2009 XF with 4.2L, and Jaguar XF 2009.